n1 kmoli C6H5-CH3 + Cl2 ⇒ C6H5-CH2Cl + HCl
n2 kmoli C6H5-CH3 + 2Cl2 ⇒ C6H5-CHCl2 + 2HCl
n3 kmoli C6H5-CH3 + 3Cl2 ⇒ C6H5-CCl3 + 3HCl
n4 kmoli C6H5-CH3 nereactionat
n1/4 = n2/2 = n3/2 = n4/1 = n/9 n1 = 4/9 ·n n2 = n3 = 2/9 ·n n4 = n/9
solutia de NaOH : ms = 550kg c = 40% ⇒ md = 220g nNaOH = 220/40 = 5,5
nHCl = nNaOH = 5,5 kmoli = n1 + 2n2 + 3n3 = 4n/9 + 4n/9 + 6n/9 = 14n/9
n toluen = 49,5/14 kmoli m = n·92 = 325,857 kg